In psychology, it is commonly believed that the best predictor of future performance is:

Which of these is the most accurate description of what occurs when a neural impulse moves down the length of a neuron?

a) exchange of ions b) increase in pressure c) sudden release of endorphins d) sudden decrease in hormone levels

Which is an example of a well-designed object for which ordinary users have well-

articulated schemas about its use? (a) a mainframe computer (b) a book (c) a VCR (d) a programmable microwave oven (e) none of the above